The use of additives to enhance properties of pre-formed foamed concrete

This paper describes an experimental study of an enhancement of pre-formed foamed concrete, 1300-1900 kg/m3, by utilising two types of additives, silica fume and fly ash, to partially replace Portland cement and fine sand. It focuses on consistency, mechanical and thermal properties as well as prese...

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Main Authors: Hilal, Ameer Abdulrahman, Thom, Nicholas, Dawson, Andrew
Format: Article
Published: IACSIT Press 2015
Subjects:
Online Access:https://eprints.nottingham.ac.uk/44579/
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author Hilal, Ameer Abdulrahman
Thom, Nicholas
Dawson, Andrew
author_facet Hilal, Ameer Abdulrahman
Thom, Nicholas
Dawson, Andrew
author_sort Hilal, Ameer Abdulrahman
building Nottingham Research Data Repository
collection Online Access
description This paper describes an experimental study of an enhancement of pre-formed foamed concrete, 1300-1900 kg/m3, by utilising two types of additives, silica fume and fly ash, to partially replace Portland cement and fine sand. It focuses on consistency, mechanical and thermal properties as well as presenting a comparison with normal weight, lightweight and foamed concretes from the literature. In addition to conventional foamed concrete mixes (FC), foamed concrete mixes with high flowability and strength (FCa) were also manufactured in this study. The FC mixes had 28-day compressive strengths from 6 to 23 MPa and corresponding thermal conductivities in the dry state from 0.475 to 0.951 W/mK, whereas for the same density range, the FCa mixes gave 19-47 MPa and 0.498-0.962 W/mK, respectively. Compared to other studies on foamed concrete, the results from the mixes investigated in this study showed higher strengths (for a given density), higher tensile to compressive strength ratios and higher moduli of elasticity.
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spelling nottingham-445792020-05-04T17:14:22Z https://eprints.nottingham.ac.uk/44579/ The use of additives to enhance properties of pre-formed foamed concrete Hilal, Ameer Abdulrahman Thom, Nicholas Dawson, Andrew This paper describes an experimental study of an enhancement of pre-formed foamed concrete, 1300-1900 kg/m3, by utilising two types of additives, silica fume and fly ash, to partially replace Portland cement and fine sand. It focuses on consistency, mechanical and thermal properties as well as presenting a comparison with normal weight, lightweight and foamed concretes from the literature. In addition to conventional foamed concrete mixes (FC), foamed concrete mixes with high flowability and strength (FCa) were also manufactured in this study. The FC mixes had 28-day compressive strengths from 6 to 23 MPa and corresponding thermal conductivities in the dry state from 0.475 to 0.951 W/mK, whereas for the same density range, the FCa mixes gave 19-47 MPa and 0.498-0.962 W/mK, respectively. Compared to other studies on foamed concrete, the results from the mixes investigated in this study showed higher strengths (for a given density), higher tensile to compressive strength ratios and higher moduli of elasticity. IACSIT Press 2015-08-31 Article NonPeerReviewed Hilal, Ameer Abdulrahman, Thom, Nicholas and Dawson, Andrew (2015) The use of additives to enhance properties of pre-formed foamed concrete. International Journal of Engineering and Technology, 7 (4). pp. 286-293. ISSN 1793-8236 Foamed concrete Mineral admixture Mechanical properties Thermal conductivity https://doi.org/10.7763/IJET.2015.V7.806 doi:10.7763/IJET.2015.V7.806 doi:10.7763/IJET.2015.V7.806
spellingShingle Foamed concrete
Mineral admixture
Mechanical properties
Thermal conductivity
Hilal, Ameer Abdulrahman
Thom, Nicholas
Dawson, Andrew
The use of additives to enhance properties of pre-formed foamed concrete
title The use of additives to enhance properties of pre-formed foamed concrete
title_full The use of additives to enhance properties of pre-formed foamed concrete
title_fullStr The use of additives to enhance properties of pre-formed foamed concrete
title_full_unstemmed The use of additives to enhance properties of pre-formed foamed concrete
title_short The use of additives to enhance properties of pre-formed foamed concrete
title_sort use of additives to enhance properties of pre-formed foamed concrete
topic Foamed concrete
Mineral admixture
Mechanical properties
Thermal conductivity
url https://eprints.nottingham.ac.uk/44579/
https://eprints.nottingham.ac.uk/44579/
https://eprints.nottingham.ac.uk/44579/